Carl Brown walks you through his workflow to distribute ad hoc builds
of iOS apps using Dropbox. It automatically deploys and emails links to install
when it detects new git commits—pretty impressive. Even if you don’t need the
whole processs there’s lots of pieces to learn from to set up your own flow. I
didn’t know about iOS Beta Builder.

I still use TestFlight for my main beta team because of its
installation tracking, release management, and great feedback mechanism. But
sometimes you just want to do a one-off build for one or two people to test
something and this workflow is a great technique to know.